Mold-panel.



K. 0. GUTHRIE.

MOLD PANEL.

APPLICATION FILED AUG. 15, 1907.

906,498 Patented Dec. 8,1908.

SSHBBTS-SHEET 1.

INVENTOR:

ATT RN O K. 0. GUTHRIE. MOLD PANEL.

APPLICATION FILED AUG.15, 1907. 06,493. Patented Dec. 8, 1908 3 SHEBTSSHBET 2.

- INME/NTURI 25 fg/( 9;

ATTORNEY K. O. GUTHRIE MOLD PANEL.

APPLICATION FILED AUG.15, 1907.

SHEET 3.

Patented Dec. 8

3 SHEETS- INVENTOR: 'la/xiu,

WITNESSES To all whom it may concern:

ITED STATES PATENT OFFICE.

KEITH O. GUTHRIE, OF NEW YORK, N. Y., ASSIGNOR TO MABEL S. GUTHRIE, OF BROOKLYN, NEW YORK.

MOLD-PANEL.

Be it known that I, KEITH O. Gurnmn, a citizen of the United States, residing at Brooklyn, in the city of New York, county of Kings, and State of New York, have invented certain new and useful Improvements 'in Mold-Panels; and I do hereby declare the followin to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it a ippertains to make and use the same.

he object of In invention is to provide an improved concrete buildmgs and the like.

In the construction of concrete buildings, temporary molds are formed for sections of the walls, floors, etc., and these molds are filled with the concrete which has been properly mixed and tempered. After the concrete has set, the temporary molds are removed and new molds erected for other sections of the building. I aim to improve upon the construction of such buildings, as heretofore practiced, by su plying improved mold panels of a type whic will be hereafter fully described, and which. are, capable of being used in an improved way, which facilitates the erection and knocking down 'of the tem orary mold, which are li ht and easily han ed, which are capable of lorming a smooth surface, and which may be use repeatedly in the construction of the temporary molds.

The nature of my improvements will be understood from a consideration of the following description in connection with the accompanying rawings, in which the same letters of reference refer to like parts.

throu hout.

' In the drawings, Figure 1 is a plan view oi a concrete wall in the construction of which my improvements are used; Fig. 2 is a perspective view of one of my improved panels, with parts broken away; Fig. 3 is a detail view of an approved means for attaching the outer faces of the panels to the interior supporting parts; Fig. 4 is a detail, sectional elevation showing the manner of supporting the anels in place in the mold; Fig. 5 is a longitudinal section of a modified form of panel, and Fig. 6 is a plan View of the same with the upper sheet removed; Fig. 7 is an elevation of the outer corner of a wall mold Specification of Letters Patent. Application filed August 15, 1907. Serial No. 388,688.

ane for the construction of Patented Dec. 8, 1903 in which my improvements are ap lied; Figs. 8 and 9 are sections of irregular orms constructed in accordance with m invention; and Fig. 10 is an elevation of Flg. 9.

The concrete wall 1 is constructed by fillin in the tem orary mold made from a series 0 mold pane s 2 of an improved construction, which I will now describe. Each panel is composed of two outer thin metallic sheets 3 separated and rigidly supported by'the truss web or tie member 4; which may be made of a continuous metallic sheet or separate sheets, ascircumstances may dictate. As indicated in Fig. 1, this truss web or tie member is riveted alon a fiat portion 5 to one of the plates 3. It is then extended diagonally across the space between the plates 3 and is riveted along a flat portion 6 to the other plate. It then exten s diagonally again to the first plate and is riveted along a second flat portion 5 and so on throughout the extent of the panel. The

anel is further strengthened and closed at its edges against the admission of dirt by channel beams 7 riveted to the plates 3. The rivets securing the outer plates 3 to the supporting structure should be counter-sunk to a fiat surface, against which the concrete may be filled, and though it is advisable to counter-sink the rivets on both sides of the anel in order that either side may be used mterchangeably, it is possible-to use panels in which the rivets are counter-sunk on but the one side, which is used to form the inner face of the mold.

For the urpose of affording a secure fastening at t e rivet, and at the same time to counter-sink the rivet in the manner desired, I prefer to adopt the construction which is illustrated in detail at Fi 3. In this construction a hole is punched through the plate 3 and the underlym flat plortion 6 or other like part, and the si es of t is hole are drawn down into a cup-shape by appropriate dies, thus bending down the flat surface of the plate 3 and the flat surface of the part 6 about.

it is rendered practically impossible to tear out the sheets 3 or 6 from about the head or I the upset portion of the rivet.

It will be observed that in the construction of the panel above described, the channel beams 7 close and stifien the outer edges of the panel and act as plate girders against pressure of the concrete. The truss web 4 acts as a tie member in the direction of the truss and as a series of plate girders along the length of the web; The fiat plates forming the faces of the panels constitute continuous chords for the truss and flanges for the girders. By this construction, I am able to produce a light, metallic panel which is eX- tremely durable and so rigid that it will re sist the pressure of the cement when supported only at its corners, as illustrated in i s. 1 and 7.

n Figs. 5 and 6, I have shown a modified form of panel in which the outer edges are closed by channel beams as before, but there is substituted on the inside, for the truss web 4, two series of fiat truss-bars 10 and 11 running at right angles to one another and riveted to the plates 3, as before. With these improved panels, I erect the temporary molds in the manner which is illustrated in Figs. 1 and 7. For the ur ose of erecting a mold in accordance with t is feature of my invention, a series of studs 12 are set up about the place at which the wall or other structure is to be built, and positioned a considerable distance from the wall. At each corner of each panel is secured an eye-bolt 15 to which is attached a strap 16 having an eye at its outer end. The panels are fastened in proximity to, but spaced away from, the studs by driving pins 17 through the eyes at the outer end of the straps 16 into the studs, and when so attached to the studs, the panels are rigidly secured in osition to form a fiat sur face for the wall y driving the wedges or blocks 18 between the panels and the studs. By means of these straps secured to the panels, the individual panels, having been accurately ositioned by the use of a spirit level, or the 'ke, may be rapidly and easily fixed in position by laying the straps against the adjacent studs and driving a pin through each stra into the stud. The panels may then be b ocked up by a single set of blocks, thus avoiding the difliculties of adjustment and other disadvantages attendant upon the use of yokes or stirrups attached to the panels and slipped over the studs or other known ways of adjusting and holding the panels in position.

The mold being erected in the manner above described, afi'ords a smooth, fiat, metallic surface for both sides of the inclosed wall, and after the cement, or like material, has been filled in and has set to form the wall, the panels may be rapidly and conveniently removed by knocking down the wedges 18 scenes In Figs. 8, 9 and 10, I have illustrated panels made in irregular shapes and in accordance with my invention. In Fig. 8 is shown in section a panel having a reversed curvature, and in Figs. 9 and 10 is shown a panel having a simple curve. In the construction of such irregular forms Isupport the sheet of metal forming the face which is laced next to the concrete, by a tie member iike those described above, and having bent the plate to the desired sha e, I attach a second properly bent plate to t e flat portions of the tie member to form a continuous flange for the truss-structure as in the manner which has been described in connection with Fig. 2. It will be observed, however, that the bent form of these irregular shapes gives them a power of resistance to the pressure of the concrete, and it is, therefore, not necessary to support them by truss-structure of so great strength as in the case of flat panels. Furthermore it is unlikely that such irregular forms will be available for use in any great number of buildings. That is, they are likely to be of a more temporary nature designed tofulfil the requirements of a particular structure and unavailable for use in other structures. So -also it is seldom necessary that both sides of the Walls should have the curvature, the irregular forms being commonly applied but to one side of the wall. The result of these conditions is that it is often advantageous to make these irregular forms of a more temporary and less durable construction and to construct them with but one continuous surface thus saving in first curved edge of the panel are dispensed with.

This cheapening and simplification of the irregular panels may be carried still further by reducing the length of the truss-webs, or by substituting one or more'flat truss-bars like the truss-bars 10 illustrated in Figs. 5 and 6. Owing, however, to the strength acquired by the curvature of these irregular panels, it is seldom necessary to use truss-bars running in that direction in which the lines of the panel are straight, so that the supporting trussstrueture may resolve itself into one or more truss-bars like 10, or their equivalent, running along the line of curvature, and braced by bent metallic strips such as the stri s 27 shown in Fig. 12, or their e uivalent. t will be appreciated by those ski ed in the art that a like simplification and cheapening of parts may be adopted with flat panels where for any reason they are to be made of a relatively temporary nature, the complete construction of flat panels illustrated and described above lending itself peculiarly, however, to the construction of anels of uniform size and great durability which may be repeatedly used in buildin different structures.

It wi 1 be observed that it is characteristic of my improved panels that by virtue of the truss construction they may be made of the desired strength and rigidity from three elementstwo chords and a webeach of which is in itself flexible, so that when the flexible web has been attached to one of the flexible chordsas the face platethe truss structure is completed and rendered rigid throughout by attaching the other chord,

which may in itself be flexible and therefore capable of being bent to the required shape without any difficulty.

Though I have illustrated the channel beams 7 at the end of the panel separate from the truss-web 4 they may, if desired, be made continuous with the truss-web, which will be properly bent for that purpose, as shown in Fig. l at a. My improved panels also lend themselves readily to the construction of ornamented surfaces. To make any desired break in the plane surface, to resemble joints in stone work, or to form any kind of ornamentation, blocks or strips of wood or of sheet metal properly bent or stamped may be temporarily attached to the face of the panel by means of light bolts running through the panels, orthe like, and this may be done without injuring the strength of the panel or destroying its surface to such an extent as to make it unavailable for a later use.

What I claim is 1. An improved mold panel for concrete construction comprising a thin flexible metallic face-plate, a flexible metallic web-section supporting and reinforcing the faceplate, and a stiffening chord attached to the web-section to form the whole into a continuous rigid truss structure.

2. An improved mold panel for concrete construction comprising a thin flexible metallic face-plate supported and reinforced by a web-section comprising plate-girders extending in one direction of the panel and having their inner flanges secured to the faceplate, in combination with a chord extending across the girders and secured to the outer flanges thereof to form the whole into a continuous rigid truss structure.

3. A flexible material for constructing mold panels for concrete construction comprising a thin flexible'metallic face-plate, a flexible metallic truss web-section of thin metal bent to form diagonally extending reaches and intermediate connecting portions, alternate intermediate portions being secured to the face-plate and the remaining alternate intermediate portions adapted to be secured to a stiffening chord to form the whole into a continuous rigid truss structure.

4. An improved mold panel for concrete construction comprising a thin metallic faceplate supported and reinforced by sheet metal extending across the face-plate and bent to form a series of connected truss webs extending along the face-plate, and a chord secured to all of the individual webs along the panel to form the whole into a continuous rigid truss structure.

5. An improved panel for the purpose described comprising two thin metal plates, separated and reinforced by sheet metal interposed between the plates and bent to form a trussweb, the web being attached to the plates to form the whole into a continuous rigid truss structure, and channel beams secured between the edges of the plates to close the edges of the panel.

6. An improved panel for the purpose described comprising two thin metal plates, separated and reinforced by a sheet metal truss-web 4 having the flat )ortions 5 and 6 attached to said plates, and channel beams attached to the edges of said plates to close the edges of the panel; substantially as described.

7. An irregular panel of the character described, comprising a curved thin metallic face late sup orted and reinforced by sheet metal exten ing in the direction of the straight lines of the panel, and bent to form a truss-web extending along the line of curvature, and a bent chord extending along the line of curvature, the face plate, web, and chord being attached to one another to form the whole into a continuous rigid truss structure.

8. An irregular panel of the character described com rising a thin flexible curved metallic face p ate supported and reinforced by a flexible metallic truss-web having a continuous chord extending along the line of curvature.

In testimony whereof I a'flix my signat.-. in presence of two witnesses.

KEITH O. GUTHRIE.

l/Vitnesses:

FRANK HENNESSY, \VILLIAM H. DAVIS. 

